diff --git a/unix/common/RandrGlue.h b/unix/common/RandrGlue.h
new file mode 100644
index 0000000..40d2d2e
--- /dev/null
+++ b/unix/common/RandrGlue.h
@@ -0,0 +1,64 @@
+/* Copyright (C) 2002-2005 RealVNC Ltd.  All Rights Reserved.
+ * Copyright 2011-2015 Pierre Ossman for Cendio AB
+ * 
+ * This is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation; either version 2 of the License, or
+ * (at your option) any later version.
+ * 
+ * This software is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ * 
+ * You should have received a copy of the GNU General Public License
+ * along with this software; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307,
+ * USA.
+ */
+
+/*
+  This header defines an interface for X RandR operations. It is
+  implemented by a corresponding RandrGlue.c, either with internal
+  calls (for Xvnc/vncmodule.so) or Xlib calls (x0vncserver).
+ */
+
+#ifndef RANDR_GLUE_H
+#define RANDR_GLUE_H
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+int vncGetScreenWidth(int scrIdx);
+int vncGetScreenHeight(int scrIdx);
+
+int vncRandRResizeScreen(int scrIdx, int width, int height);
+void vncRandRUpdateSetTime(int scrIdx);
+
+int vncRandRHasOutputClones(int scrIdx);
+
+int vncRandRGetOutputCount(int scrIdx);
+int vncRandRGetAvailableOutputs(int scrIdx);
+
+char *vncRandRGetOutputName(int scrIdx, int outputIdx);
+
+int vncRandRIsOutputEnabled(int scrIdx, int outputIdx);
+int vncRandRIsOutputUsable(int scrIdx, int outputIdx);
+
+int vncRandRDisableOutput(int scrIdx, int outputIdx);
+int vncRandRReconfigureOutput(int scrIdx, int outputIdx, int x, int y,
+                              int width, int height);
+
+unsigned int vncRandRGetOutputId(int scrIdx, int outputIdx);
+void vncRandRGetOutputDimensions(int scrIdx, int outputIdx,
+                                 int *x, int *y, int *width, int *height);
+
+int vncRandRCreateOutputs(int scrIdx, int extraOutputs);
+void *vncRandRCreatePreferredMode(void *output, int width, int height);
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif